find_index フィルター（配列内のマッチ要素インデックス取得）

{
  "category": "array",
  "deprecated": false,
  "deprecation_reason": "",
  "description": "This requires you to provide both the property name and the associated value.",
  "parameters": [],
  "return_type": [
    {
      "type": "number",
      "name": "",
      "description": "",
      "array_value": ""
    }
  ],
  "examples": [
    {
      "name": "",
      "description": "",
      "syntax": "",
      "path": "/collections/all",
      "raw_liquid": "{% assign index = collection.products | find_index: 'vendor', \"Polina's Potent Potions\" %}\n\n{{ index }}",
      "parameter": false,
      "display_type": "text",
      "show_data_tab": true
    },
    {
      "name": "Returns `nil` when no items match the specified property value.",
      "description": "",
      "syntax": "",
      "path": "/collections/all",
      "raw_liquid": "{% assign index = collection.products | find_index: 'vendor', \"Polina's Potions\" %}\n\n{{ index | default: \"No index found\" }}",
      "parameter": false,
      "display_type": "text",
      "show_data_tab": true
    }
  ],
  "summary": "Returns the index of the first item in an array with a specific property value.",
  "syntax": "array | find_index: string, string",
  "name": "find_index"
}